Some awkward phrasing in the last posting.

https://epic.gsfc.nasa.gov/

The area in constant solar radiation with the North pole at its center is currently reaching its maximum, or similarly, the radius between North pole and circle of illumination is most distant. It makes understanding Arctic sea ice evolution fairly straightforward and especially that melting really begins post Solstice much like heating continues after noon in terms of daily rotation.

How long the educational community can hold out is anyone's guess, the old diagram of the Earth with a pole stuck through it in order to dither around with a tilting Earth looks as antiquated as a stationary Earth . With the racket of 'climate change' rapidly disappearing it is time to discover planetary climate within context of all planets in the solar system and how the rate of change across 6 months owing to planetary inclination influences what type of climate each planet has within a spectrum.